Propeller arrangement

Abstract

The invention relates to a propeller arrangement ( 1 ) having a propeller part ( 2 ) and a shaft part ( 3 ), in particular for an underwater vacuum cleaner, wherein the propeller part ( 2 ) and the shaft part ( 3 ) are coaxially connected to one another via a latching connection ( 4 ), which latching connection ( 4 ) has at least two latching fingers ( 5 ) which can move elastically in a latching direction (R) radially with respect to an axis of rotation ( 1 a ) of the propeller arrangement ( 1 ), and a latching opening ( 6 ) for accommodating the latching fingers ( 5 ). The latching fingers ( 5 ) are formed integrally with the shaft part ( 3 ). The latching fingers ( 5 ) and the latching opening ( 6 ) form—in and/or against a direction of rotation (P) of the propeller arrangement ( 1 ) —a positive connection. This enables an easily detachable rotary connection between the propeller part ( 2 ) and the shaft part ( 3 ) in a simple manner.

The invention claimed is: 
     
       1. A propeller arrangement, comprising the following:
 a propeller part and a shaft part, in particular for an underwater vacuum cleaner, wherein the propeller part and the shaft part are configured to be coaxially connected to one another via a latching connection, wherein the latching connection has at least two latching fingers, which can be moved elastically in a latching direction (R) radially with respect to an axis of rotation of the propeller arrangement, and a latching opening for accommodating the latching fingers, wherein the latching fingers are formed integrally with the shaft part, and the latching fingers and the latching opening form a positive connection, wherein the positive connection is defined by the cross-section of the latching opening and the profile of the latching fingers. 
 
     
     
       2. The propeller arrangement according to  claim 1 , wherein the latching opening has a rectangular cross-section. 
     
     
       3. The propeller arrangement according to  claim 1 , wherein the latching opening includes a first flank and a second flank and the latching fingers rest directly against the first flank or the second flank of the latching opening. 
     
     
       4. The propeller arrangement according to  claim 3 , wherein at least one flank of the latching opening has at least one depression or at least one guide strip. 
     
     
       5. The propeller arrangement according to  claim 4 , wherein the latching opening has a width (b) which is measured perpendicularly to the latching direction (R) between two parallel first flanks of the latching opening and corresponds to at least one finger width (f) of the latching fingers. 
     
     
       6. The propeller arrangement according to  claim 1 , wherein the latching opening has a width (w) which is measured in the direction of the latching direction (R) between two parallel second flanks and corresponds to at least a minimum outer distance (a) of the latching fingers from each other. 
     
     
       7. The propeller arrangement according to  claim 1 , wherein the shaft part is designed as a shaft cap. 
     
     
       8. The propeller arrangement according to  claim 1 , wherein the propeller part or the shaft part consists of a thermoplastic terpolymer, preferably an acrylonitrile-butadiene-styrene copolymer. 
     
     
       9. The propeller arrangement according to  claim 1 , wherein the latching fingers and the latching opening form the positive connection, in and against a direction of rotation (P) of the propeller arrangement. 
     
     
       10. The propeller arrangement according to  claim 1 , wherein the latching fingers and the latching opening form the positive connection, in or against a direction of rotation (P) of the propeller arrangement. 
     
     
       11. The propeller arrangement according to  claim 1 , wherein the latching opening includes a first flank and a second flank and the latching fingers rest directly against the first flank and the second flank of the latching opening. 
     
     
       12. The propeller arrangement according to  claim 3 , wherein at least one of the flanks of the latching opening has at least one depression and at least one guide strip. 
     
     
       13. The propeller arrangement according to  claim 1 , wherein the propeller part and the shaft part consist of a thermoplastic terpolymer, preferably an acrylonitrile-butadiene-styrene copolymer.